Adhesive composition, adhesive layer, polarizing film having adhesive layer, and image formation device

A technology of adhesive layer and composition, which is applied in the direction of non-polymer adhesive additives, adhesive types, adhesive additives, etc., and can solve liquid crystal display device liquid crystal orientation effects, small static electricity generation, uneven display, etc. Problems, achieve excellent antistatic function, improve durability, and prevent unevenness after heating

Active Publication Date: 2014-07-16
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The static electricity generated in this way will affect the alignment of the liquid crystal inside the liquid crystal display device, causing malfunctions
In addition, when using a liquid crystal display device, display unevenness due to static electricity may occur
The generation of static electricity can be suppressed, for example, by forming an antistatic layer on the outer surface of the polarizing film, but there is a problem that the effect is small and the generation of static electricity cannot be fundamentally prevented.

Method used

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  • Adhesive composition, adhesive layer, polarizing film having adhesive layer, and image formation device
  • Adhesive composition, adhesive layer, polarizing film having adhesive layer, and image formation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0161] The following examples illustrate the present invention in detail, but the present invention is not limited by these examples. In addition, the parts and % in each example are based on weight.

[0162]

[0163] The weight-average molecular weight of the aromatic ring-containing (meth)acrylic polymer (A) is measured by GPC (gel permeation chromatography).

[0164] ・Analyzer: HLC-8120GPC manufactured by Tosoh Corporation

[0165] ・Pillar: Made by Tosoh Corporation, G7000H XL +GMH XL +GMH XL

[0166] · Column size: each Total 90cm

[0167] ·Column temperature: 40℃

[0168] ·Flow: 0.8ml / min

[0169] ·Injection volume: 100μl

[0170] ·Eluent: tetrahydrofuran

[0171] Detector: Differential refractometer (RI)

[0172] ·Standard sample: polystyrene

[0173]

[0174] A polyvinyl alcohol film having a thickness of 80 μm was stretched 3 times while being dyed in a 0.3% iodine solution at 30° C. for 1 minute between rollers having different speed ratios. Then, wh...

manufacture example 1

[0180]

[0181] In a reaction vessel equipped with a condenser tube, a nitrogen introduction tube, a thermometer, and a stirring device, 90 parts of butyl acrylate, 5 parts of benzyl acrylate (BzA), 5 parts of 4-hydroxybutyl acrylate, and a relative 100 parts of the monomer (solid state) is 1 part of AIBN as an initiator, and it is reacted at 60° C. for 7 hours under a nitrogen stream, and then ethyl acetate is added to the reaction solution to obtain a compound with a weight average molecular weight of 120. Wan's solution (solid content concentration: 30% by weight) of an aromatic ring-containing (meth)acrylic polymer (A-1).

manufacture example 2

[0183]

[0184] As the monomer mixture in Production Example 1, a monomer mixture containing 87 parts of butyl acrylate, 10 parts of benzyl acrylate, and 3 parts of 4-hydroxybutyl acrylate was used, and the same operation as in Production Example 1 was carried out, A solution of an aromatic ring-containing (meth)acrylic polymer (A-2) having a weight average molecular weight of 1.3 million was prepared.

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Abstract

Provided is an adhesive composition that contains (A) an aromatic ring-containing (meth)acrylic polymer that contains an aromatic ring-containing alkyl (meth)acrylate as a monomer unit, and (B) an ionic compound having an anionic moiety and a cationic moiety. The anionic moiety is preferably at least one type of anionic moiety represented by general formula (1): (CnF2n+1SO2)2N- (1)(in general formula (1), n is an integer between 1 and 10), general formula (2): CF2(CmF2mSO2)2N- (2) (in general formula (2), m is an integer between 2 and 10), or general formula (3): -O3S(CF2)l SO3 - (3) (in general formula (3), l is an integer between 3 and 10).

Description

technical field [0001] The present invention relates to an adhesive composition excellent in antistatic function, an adhesive layer formed from the adhesive composition, a polarizing film, and a polarizing film with an adhesive layer having the adhesive layer. Furthermore, this invention relates to image display devices, such as a liquid crystal display device, an organic electroluminescent display device, and PDP using the said polarizing film with an adhesive layer. Background technique [0002] For liquid crystal display devices, etc., it is essential to arrange polarizing elements on both sides of the liquid crystal cell due to its image forming method, and usually a polarizing plate (hereinafter, "polarizing plate" is also referred to as "polarizing film" ). When bonding the above-mentioned polarizing film to a liquid crystal cell, an adhesive is usually used. Moreover, in bonding a polarizing film and a liquid crystal cell, in order to reduce light loss normally, eac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/06C09J11/06G02B5/30G02F1/1335
CPCC09J7/22C09J7/38C09J11/06C09J133/08G02B5/3033C09J2467/006C09J2301/122C09J133/06C09J133/066C09J175/04C08G18/6229C08G18/8022C08G2170/40Y10T428/266Y10T428/2843Y10T428/2848C09K2323/059C08F220/1804C08F220/1807C08F220/20G02F1/133528
Inventor 保井淳外山雄祐木村智之佐竹正之
Owner NITTO DENKO CORP
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